VIDEO: Tragic accidents or the work of a serial killer? Watch this GRETA INVESTIGATES sneak peek & tune in tonight at 10pm/ET

Young college men found dead in rivers across the country…some say it was the result of alcohol abuse but others believe it to be more sinister.  ‘Greta Investigates: Death at the River’s Edge’ premieres tonight at 10pm/ET…tune in or set your DVR now!